| [41.] | ![]() | Goeppert, H. R. and A. Menge. Die Flora des Bernsteins. Danzig, 1883. |
| Conwentz, H. Monographie der baltischen Bernsteinbäume. Danzig, 1890. |
[42.] Hovelacque, M. Sur la Nature végétale de l'Aachenosaurus multidens. Bull. Soc. Belge de Géol. etc. Tome IV. p. 59. 1890.
[43.] Oliver, F. W. and D. H. Scott. On the structure of the Palaeozoic seed Lagenostoma Lomaxi. Phil. Trans. R. Soc. Vol. CXCVII. p. 193. 1904.
[44.] Kidston, R. On the fructification of Neuropteris heterophylla. Phil. Trans. Royal Soc. London, Vol. CXCVII. p. 1.
[45.] Smith, Geoffrey. A Naturalist in Tasmania. Oxford, 1909.
[46.] Campbell, D. H. On the Distribution of the Hepaticae, and its significance. New Phytologist, Vol. VI. p. 203. 1907.
[47.] Kidston, R. and D. T. Gwynne-Vaughan. On the Fossil Osmundaceae. Phil. Trans. R. Soc. Edinburgh, Vols. XLV., XLVI. 1907-09.
[48.] Seward, A. C. Fossil Plants. 2 Vols. Cambridge, 1898-1910.
[49.] Wallace, A. R. The Malay Archipelago. London, 1886.
[50.] Reid, C. and Eleanor M. The Lignite of Bovey Tracey. Phil. Trans. Royal Soc. London, Vol. 201, p. 161. 1910.
